General Description

The TC1072 and TC1073 are high accuracy (typically ±0.5) CMOS upgrades for older (bipolar) low dropout regulators. Designed specifically for battery-operated systems, the devices’ CMOS construction eliminates wasted ground current, significantly extending battery life. Total supply current is typically 50 µA at full load (20 to 60 times lower than in bipolar regulators).

The devices’ key features include ultra low noise operation (plus optional Bypass input); very low dropout voltage (typically 85 mV, TC1072 and 180 mV, TC1073 at full load) and fast response to step changes in load. An error output (ERROR) is asserted when the devices are out-of-regulation (due to a low input voltage or excessive output current). ERROR can be used as a low battery warning or as a processor RESET signal (with the addition of an external RC network). Supply current is reduced to 0.5 µA (max) and both VOUT and ERROR are disabled when the shutdown input is low. The devices incorporate both overtemperature and overcurrent protection.

The TC1072 and TC1073 are stable with an output capacitor of only 1 µF and have a maximum output current of 50 mA, and 100 mA, respectively. For higher output current versions, please see the TC1185, TC1186, TC1187 (IOUT = 150 mA) and TC1107, TC1108 and TC1173 (IOUT = 300 mA) data sheets.

Features:

• 50 µA Ground Current for Longer Battery Life

• Very Low Dropout Voltage

• Choice of 50 mA (TC1072) and 100 mA (TC1073) Output

• High Output Voltage Accuracy

• Standard or Custom Output Voltages

• Power-Saving Shutdown Mode

• ERROR Output Can Be Used as a Low Battery

Detector or Processor Reset Generator

• Bypass Input for Ultra Quiet Operation

• Overcurrent and Overtemperature Protection

• Space-Saving 6-Pin SOT-23 Package

• Pin Compatible Upgrades for Bipolar Regulators

• Standard Output Voltage Options:

- 1.8V, 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 3.0V, 3.3V, 3.6V, 4.0V, 5.0V

• Other output voltages are available. Please

contact Microchip Technology Inc. for details.

Applications:

• Battery Operated Systems

• Portable Computers

• Medical Instruments

• Instrumentation

• Cellular/GSM/PHS Phones

• Linear Post-Regulators for SMPS

• Pagers

TC1073-2.85VCH713属于集成电路（IC） > 线性 + 开关稳压器。微芯科技股份有限公司制造生产的TC1073-2.85VCH713稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。